/// <summary> /// Browses the specified node. /// </summary> public ReferenceDescriptionCollection Browse(NodeId nodeId) { if (m_session == null) { throw new ServiceResultException(StatusCodes.BadServerNotConnected, "Cannot browse if not connected to a server."); } try { m_browseInProgress = true; // construct request. BrowseDescription nodeToBrowse = new BrowseDescription(); nodeToBrowse.NodeId = nodeId; nodeToBrowse.BrowseDirection = m_browseDirection; nodeToBrowse.ReferenceTypeId = m_referenceTypeId; nodeToBrowse.IncludeSubtypes = m_includeSubtypes; nodeToBrowse.NodeClassMask = m_nodeClassMask; nodeToBrowse.ResultMask = m_resultMask; BrowseDescriptionCollection nodesToBrowse = new BrowseDescriptionCollection(); nodesToBrowse.Add(nodeToBrowse); // make the call to the server. BrowseResultCollection results; DiagnosticInfoCollection diagnosticInfos; ResponseHeader responseHeader = m_session.Browse( null, m_view, m_maxReferencesReturned, nodesToBrowse, out results, out diagnosticInfos); // ensure that the server returned valid results. Session.ValidateResponse(results, nodesToBrowse); Session.ValidateDiagnosticInfos(diagnosticInfos, nodesToBrowse); // check if valid. if (StatusCode.IsBad(results[0].StatusCode)) { throw ServiceResultException.Create(results[0].StatusCode, 0, diagnosticInfos, responseHeader.StringTable); } // fetch initial set of references. byte[] continuationPoint = results[0].ContinuationPoint; ReferenceDescriptionCollection references = results[0].References; // process any continuation point. while (continuationPoint != null) { ReferenceDescriptionCollection additionalReferences; if (!m_continueUntilDone && m_MoreReferences != null) { BrowserEventArgs args = new BrowserEventArgs(references); m_MoreReferences(this, args); // cancel browser and return the references fetched so far. if (args.Cancel) { BrowseNext(ref continuationPoint, true); return(references); } m_continueUntilDone = args.ContinueUntilDone; } additionalReferences = BrowseNext(ref continuationPoint, false); references.AddRange(additionalReferences); } // return the results. return(references); } finally { m_browseInProgress = false; } }